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    <title>Document</title>
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<body>
    <script>

        // const str = '{"name":"jack","age":18}'
        // const str  = 'afdafdsa'
        // const res = JSON.parse(str)
        // console.log(res);

        // try_catch_finally
        try {
            const str  = 'afdafdsa'
            const res = JSON.parse(str)
            console.log(res);
        }catch(err){
            console.log(err);
        }finally{
            console.log('成功或失败都执行');
        }





    </script>
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